The only UFC 94 winners not tested were Jon Fitch and Dan Cramer. The only losing fighters who didn’t compete in the main event or co-main event who were tested were Stephan Bonnar, who failed a drug test in 2006, Nate Diaz.

The NSAC traditionally tests all main-event fighters, all winning
competitors, and any fighters who have previously failed drug tests.
However, “I like to mix it up every now and then for that very reason: unpredictability,” Kizer today said an email to MMAjunkie.com.

The NSAC tests for steroids and other performance-enhancing drugs, as well as drugs of abuse such as cocaine, marijuana and heroin. All of the competitors were tested for both classifications of drugs.